XML 34 R22.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share-Based Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of share-based compensation expenses | Total share-based compensation expenses were comprised as follows (in thousands):
| Three months ended March 31,
| 2018 |  | 2017
Option plan | $ | 3,057 |  |  | $ | 1,422 |
Other share-based awards | 5,889 |  |  | 9,092 |
Total share-based compensation before tax | 8,946 |  |  | 10,514 |
Tax benefit | 2,129 |  |  | 3,905 |
Total share-based compensation expense included in net income | $ | 6,817 |  |  | $ | 6,609 |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration